Show statistics for timetable plans

[zac-k-03]

As a student, I want the system to show me the statistics of my scheduling choices (e.g., total weekly campus hours, number of gaps).

• Metric Calculation:
	○ Develop calculations for key schedule metrics such as:
		- Total weekly on-campus hours.
		- Total number and duration of gaps between classes.
		- Average start and end times per day.
	○ Aggregate these metrics as part of the scheduling output.
• UI Presentation:
	○ Display a summary panel or dashboard alongside each schedule variation.
	○ Present the metrics in a clear, concise format (e.g., using charts, icons, or text summaries).
	○ Optionally include tooltips or info icons to explain each metric.
• User Feedback:
	○ Ensure that the information is updated in real time as users adjust their preferences or override parts of the schedule.
	○ Provide suggestions if metrics exceed user-defined thresholds (e.g., “Your schedule has 6 hours on campus – consider reducing idle time”).
• Testing & Validation:
	○ Unit tests to verify that metric calculations are accurate for a variety of schedule scenarios.
	○ UI tests to ensure that the metric display updates correctly with each schedule change.
	○ End-to-end tests that simulate user interactions affecting scheduling choices and confirm that the summary reflects those changes.